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Estimates and comparisons of the effects of sampling variation using 'national' macroinvertebrate sampling protocols on the precision of metrics used to assess ecological status

Ralph T. Clarke, Auteur ; John Davy-Bowker, Auteur ; Leonard Sandin, Auteur ; Nikolai Friberg, Auteur ; Richard K. Johnson, Auteur ; Barbara Bis, Auteur

Dans Hydrobiologia (566 AUG 2006)

The Water Framework Directive (WFD) of the European Union requires all member countries to provide information on the level of confidence and precision of results in their river monitoring programmes to assess the ecological status class of rive[...]

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